Kiran Railway Saar Sangrah by Khan Sir is a free educational app available on Android, specifically designed for individuals preparing for various Railway exams. This app features a compilation of previous years' questions from 1992 to 2021, covering essential subjects such as General Studies, General Knowledge, and General Science. Users can navigate through the content organized by year and topic, ensuring a structured approach to their exam preparation.

The app caters to a wide range of Railway exams, including NTPC, Group 'D', ALP, JE, and numerous others, making it a versatile resource for both technical and non-technical positions. Additional features include offline access and a dark mode option, enhancing user experience. Overall, this app serves as a valuable tool for candidates aiming to excel in their Railway examinations.